1) pulse Doppler processing
脉冲多普勒处理
1.
An echo model of ultra-high speed moving target was established,and its effect on pulse Doppler processing was analyzed.
建立了超高速运动目标的回波模型,分析了其对目标检测中脉冲多普勒处理的影响,并提出了基于匹配傅立叶变换的脉冲多普勒处理方法。
2) Pulsed Doppler
脉冲多普勒
1.
Estimating the spectral bandwidth of pulsed Doppler signal with the stationarising method;
利用平稳性提高法估计脉冲多普勒信号的频谱宽度
2.
The simulation method of pulsed Doppler signal;
脉冲多普勒信号的模拟方法
3.
In mitral,tricuspid inflow and both ventricular outflow Pulsed Doppler patterns,Time intervals were measured and modified by heart rates,then Tei index was calculated.
5)周],按孕周分为4组,分别取得左、右心房室瓣和大动脉瓣口脉冲多普勒血流频谱,测量相应时间间期和当时心率,用平均心率进行校正,计算左、右心室Tei指数。
3) Pulsed-wave Doppler
脉冲多普勒
1.
Pulsed-wave Doppler Assessment of Left Ventricular Diastolic Function in Hypertension Patients;
脉冲多普勒检测二尖瓣环运动速度评价高血压患者左室舒张功能
2.
Methods DTI examined 57 fetuses with 14-40 weeks gestational age that suffer from arrhythmia, observed and analyzed motion amplitudes and peak distance of the mitral annulus and the tricuspid annulus, and compared the characteristic of Pulsed Doppler tissue imaging(PDTI) and traditional Pulsed-wave Doppler(PW).
方法 对产前检查发现有心律失常的 5 7例胎儿应用DTI的二维和脉冲方式观察四腔心切面的房室瓣环运动 ,分析其图像特征 ,并与传统的脉冲多普勒血流频谱 (PW )进行比较。
4) Pulse Doppler
脉冲多普勒
1.
Investigation on angle error detection algorithm of conical-scanned pulse doppler and stepped frequency composite guiding system;
锥扫脉冲多普勒/频率步进复合制导系统测角方法研究
2.
Development of Blood Flow Measurement System by Pulse Doppler Ultrasound;
脉冲多普勒血流测量系统的研制
3.
On the basis of the analysis of the signal process requirement of pulse doppler fuze and the character of DSP device,the principle of pulse doppler fuze signal process is expatiated and the design of digital signal processor used in pulse doppler fuze is made and the key of the hardware and software design is also introduced in detail in this paper.
在分析脉冲多普勒引信信号处理需求和DSP信号处理器件特性的基础上,阐述了引信信号处理的工作原理,开展了脉冲多普勒引信数字化信号处理系统的设计,并对系统中硬件设计和软件设计中的关键部分进行了详细介绍。
5) pulse-Doppler
脉冲多普勒
1.
Modeling and simulation of a pulse-Doppler radar system based on Simulink;
基于Simulink的脉冲多普勒雷达系统建模与仿真
2.
Comparing with the differential range method that early radar adoptive for measuring velocity, the radar, which based on Pulse-Doppler theory, has the better real time capability and high precision.
与早期雷达采用距离微分方法测速相比，基于脉冲多普勒理论的雷达测速技术具有实时性好、精度高等优点。
3.
In order to improve the anti-LFM(linear frequency modulation) interference performance of pseudo-random code phase-modulation and pulse-doppler combined fuze,adaptive time-variant interference suppressing filter based on FRFT(fractional fourier transform) is used to suppress LFM-interference in the combined fuze.
为提高伪码调相脉冲多普勒引信抗线性调频(LFM)干扰性能,将基于分数阶傅里叶变换(FRFT)的自适应时变干扰抑制滤波器应用到伪码调相脉冲多普勒引信中,用来对LFM干扰进行抑制。
6) PD
脉冲多普勒
1.
Design and Implementation of the Miniaturized and Digitized IF Receiver for a PD Radar Seeker;
脉冲多普勒小型数字化中频接收机的设计与实现
2.
The principle of conical scan and Pulse Doppler(PD) radar signal processing is introduced.
首先介绍了圆锥扫描测角原理和脉冲多普勒信号处理,然后分析了脉冲多普勒与圆锥扫描相结合时的信号形式,并提出了信号处理方案。
3.
In this paper,a detection method based on LFM+PD radar mode,which uses random characteristic of noise and the principle of M/N detection is presented.
根据高重频脉冲多普勒雷达的特点,分析了在此条件下的目标回波特性,讨论了如何实现高重频脉冲多普勒雷达对频率展宽信号的精确测量。
补充资料：经食管脉冲多普勒心动图
经食管脉冲多普勒心动图
超声学检查方法之一。经食管放置超声探头，行多普勒超声心动图的检查方法。该法检测二尖瓣和主动脉瓣反流的优点是超声束与血流方向近于平行，可采取高脉冲重复频率；换能器方向不受解剖结构的限制，容易扫查左房和左室流出道，以寻找定位性反流血液。与标准胸前多普勒超声检查相比，该法明显敏感，特别是对轻、中度的反流。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条